A staff member lays 5G network cables at Haikou Meilan International Airport in Haikou, south China's Hainan Province, Dec. 24, 2020. Haikou Meilan International Airport has accelerated the construction of 5G network recently to help users get access to faster network. (Xinhua/Pu Xiaoxu)

A staff member lays 5G network cables at Haikou Meilan International Airport in Haikou, south China's Hainan Province, Dec. 24, 2020. Haikou Meilan International Airport has accelerated the construction of 5G network recently to help users get access to faster network. (Xinhua/Pu Xiaoxu)

A staff member tests 5G signal at Haikou Meilan International Airport in Haikou, south China's Hainan Province, Dec. 24, 2020. Haikou Meilan International Airport has accelerated the construction of 5G network recently to help users get access to faster network. (Xinhua/Pu Xiaoxu)

A staff member tests 5G signal at Haikou Meilan International Airport in Haikou, south China's Hainan Province, Dec. 24, 2020. Haikou Meilan International Airport has accelerated the construction of 5G network recently to help users get access to faster network. (Xinhua/Pu Xiaoxu)